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Diffstat (limited to 'test/Analysis/ConstantFolding/gep.ll')
-rw-r--r-- | test/Analysis/ConstantFolding/gep.ll | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/test/Analysis/ConstantFolding/gep.ll b/test/Analysis/ConstantFolding/gep.ll new file mode 100644 index 00000000000..caa7f15f36e --- /dev/null +++ b/test/Analysis/ConstantFolding/gep.ll @@ -0,0 +1,30 @@ +; RUN: opt -instcombine -S -o - %s | FileCheck %s +; Tests that we preserve the inrange attribute on indices where possible. + +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +%struct.A = type { i32 (...)** } + +@vt = external global [3 x i8*] + +; CHECK: define i32 (...)* @f0() +define i32 (...)* @f0() { + ; CHECK-NEXT: load i32 (...)*, i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*], [3 x i8*]* @vt, inrange i64 0, i64 2) to i32 (...)**) + %load = load i32 (...)*, i32 (...)** getelementptr (i32 (...)*, i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*], [3 x i8*]* @vt, inrange i64 0, i64 1) to i32 (...)**), i64 1) + ret i32 (...)* %load +} + +; CHECK: define i32 (...)* @f1() +define i32 (...)* @f1() { + ; CHECK-NEXT: load i32 (...)*, i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*], [3 x i8*]* @vt, i64 0, i64 2) to i32 (...)**) + %load = load i32 (...)*, i32 (...)** getelementptr (i32 (...)*, i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*], [3 x i8*]* @vt, i64 0, inrange i64 1) to i32 (...)**), i64 1) + ret i32 (...)* %load +} + +; CHECK: define i32 (...)* @f2() +define i32 (...)* @f2() { + ; CHECK-NEXT: load i32 (...)*, i32 (...)** bitcast (i8** getelementptr ([3 x i8*], [3 x i8*]* @vt, i64 1, i64 1) to i32 (...)**) + %load = load i32 (...)*, i32 (...)** getelementptr (i32 (...)*, i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*], [3 x i8*]* @vt, i64 0, inrange i64 1) to i32 (...)**), i64 3) + ret i32 (...)* %load +} |